CN111469875A

CN111469875A - Escape device of subway locomotive

Info

Publication number: CN111469875A
Application number: CN202010323752.7A
Authority: CN
Inventors: 周银妹; 李群力; 马建旺; 丁静
Original assignee: Changzhou Changqing Traffic Technology Co ltd
Current assignee: Changzhou Changqing Traffic Technology Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2020-07-31

Abstract

The invention discloses an escape device of a subway locomotive, which comprises an escape door, a door lock device, an unlocking device and a mounting door frame, and is characterized in that: the escape ramp component is hinged to the top of the escape ramp component; the upper part of the escape door is provided with a transparent window. The top hinged linkage device is fixedly arranged on a door opening of the subway locomotive. The upper part of the escape door is rotatably connected and arranged on a door opening of the subway locomotive through a top hinged linkage device. The unlocking device is used for controlling the door locking device, so that the escape door can be separated from the installation door frame and turned upwards for opening. The left side and the right side of the escape door are provided with air springs which are used for keeping the escape door in a turning-over opening state. The escape ramp assembly comprises a pedal frame assembly and a pedal. The pedal frame component is hinged on the lower part of the installation door frame. The pedal sets up on pedal frame subassembly, and pedal frame subassembly forms the ramp of fleing after expanding.

Description

Escape device of subway locomotive

Technical Field

The invention relates to the technical field of subway locomotives, in particular to an escape device of a subway locomotive.

Background

When a user goes out by taking a subway, sudden emergencies such as power failure and fire disasters can be met. When this occurs, the doors for boarding and alighting are often disabled from opening due to a power outage. Therefore, corresponding manual door opening is arranged on the subway locomotive for escaping. At present, the escape devices in the market are all arranged at the head of a locomotive, and a downward-turning escape door is mostly adopted. The escape system comprises a door frame and an outwards-turned escape door, wherein the door frame is fixed on a vehicle body, the outwards-turned escape door is hinged to the door frame through the lower portion, a second-stage turning pedal is hinged to the front end of the outwards-turned escape door, and handrails which are automatically opened along with the unfolding of the escape door and the second-stage turning pedal are arranged on two sides of the second-stage turning pedal respectively. Because the emergency exits directly articulate on the door frame, final position receives the influence of coupling position after the emergency exits upset, so the emergency exits among these escape systems only is fit for the comparatively gentle motorcycle type of locomotive appearance radian, if locomotive appearance radian is great, leads to the thickness increase of emergency exits, can produce with the coupling after the upset and interfere. Chinese patent document CN105172815B (patent application No. 201510582619.2) discloses a "universal escape system for subway locomotives", which also employs an escape door that is turned downward to open. The escape door capable of being turned forwards needs to bear the action of the pedal, so that a window cannot be arranged on the escape door, the view field of the locomotive head is greatly influenced in a closed state, and whether an object is shielded in the front of the escape door cannot be judged when the escape door needs to be opened, and certain potential safety hazards exist.

Disclosure of Invention

The invention aims to provide an escape device of a subway locomotive, which has a simple structure and can be provided with a window on an escape door.

The basic technical scheme for realizing the purpose of the invention is as follows: the utility model provides an escape device of subway locomotive, includes emergency exits, locks, unlocking device and installation door frame, and the installation door frame is fixed to be set up in the door opening of subway locomotive, and locks is used for the lower part of emergency exits and installation door frame locking fixed connection, and its structural feature is: the escape ramp further comprises a top hinged linkage device and an escape ramp component.

The upper part of the escape door is provided with a transparent window. The top hinged linkage device is fixedly arranged on a door opening of the subway locomotive. The upper part of the escape door is rotatably connected and arranged on a door opening of the subway locomotive through a top hinged linkage device. The unlocking device is used for controlling the door locking device, so that the escape door can be separated from the installation door frame and turned upwards for opening. The left side and the right side of the escape door are respectively provided with an air spring, one end of each air spring is hinged to the escape door, the other end of each air spring is hinged to the corresponding position of the installation door frame, and each air spring is used for keeping the escape door in a turnover opening state. The escape ramp assembly comprises a pedal frame assembly and a pedal. The pedal frame component is hinged on the lower part of the installation door frame. The pedal sets up on pedal frame subassembly, and pedal frame subassembly forms the ramp of fleing after expanding.

The technical scheme based on the basic technical scheme is as follows: the door lock device comprises a lock bolt, an unlocking rotary disc, a locking pin pull rod, a lock bolt limiting card and a door lock mounting seat.

The lock bolts are fixedly arranged on the left side and the right side of the lower part of the installation door frame and extend into the installation door frame from lock bolt holes on the installation door frame. The lock bolt is a cylindrical shaft.

The unlocking turntable is rotatably arranged on the middle part of the door lock mounting seat. The two locking pins are respectively arranged on the left side and the right side of the door lock mounting seat in a sliding mode and are arranged in a sliding mode along the left direction and the right direction by the axes of the two locking pins. The locking pin pull rods are two, one locking pin pull rod is used for being in transmission connection with the locking pin on the left side and the unlocking turntable, and the other locking pin pull rod is used for being in transmission connection with the locking pin on the right side and the unlocking turntable, so that the unlocking turntable is rotated, and the two locking pins synchronously move in the opposite direction. And a locking pressure extension spring is arranged between the locking pin pull rod and the door lock mounting seat and is used for moving the locking pin pull rod outwards so as to enable the locking pin to extend outwards. The two lock bolt limiting clamps are respectively and rotatably arranged on the left side and the right side of the door lock mounting seat. The lock bolt limiting card comprises a U-shaped locking part and a limiting part. The front part of the lock bolt limiting card is provided with a corresponding positioning pin. The lock bolt limiting cards keep the U-shaped openings facing the upper rear direction through the corresponding torsion springs.

The technical scheme based on the corresponding technical schemes is as follows: the door lock device further comprises an emergency unlocking handle, the emergency unlocking handle is fixedly arranged on the unlocking turntable, and the emergency unlocking handle is pulled to enable the unlocking turntable to rotate.

The technical scheme based on the corresponding technical schemes is as follows: the door lock device further includes an outside unlocking push rod and an outside unlocking link. The external unlocking push rod is arranged on the left side of the door lock mounting seat in a left-right sliding mode through the axis of the external unlocking push rod, the external unlocking connecting rod is connected between the external unlocking push rod and the locking pin pull rod located on the left side in a transmission mode, the external unlocking push rod is pushed to drive the locking pin pull rod to move, and therefore the purpose of unlocking can be achieved.

The technical scheme based on the corresponding technical schemes is as follows: the unlocking device comprises an unlocking push rod. The two ends of the unlocking push rod are rotatably arranged on the escape door, the axis of the unlocking push rod is parallel to the rotation axis of the unlocking push rod, and the unlocking push rod is fixedly connected with the unlocking turntable of the door lock device through a steel wire rope, so that when the unlocking push rod is pushed upwards to rotate, the steel wire rope is driven to pull the unlocking turntable to rotate for unlocking.

The technical scheme based on the corresponding technical schemes is as follows: the unlocking device further comprises an unlocking protective cover. The left side and the right side of the unlocking protective cover are rotatably arranged in corresponding protective cover pin shaft holes on the escape door through lockable pin shafts. The unlocking protective cover covers the unlocking push rod from the upper side and the front side and is used for preventing the escape door from being opened due to the fact that the unlocking push rod is pushed by mistake. The rotary connecting part of the lockable pin shaft is provided with two planes which are parallel to each other in the front and at the back, and the two planes are parallel to the axis of the lockable pin shaft. The pin shaft hole of the protective cover comprises a round hole positioned at the upper part and a waist-shaped hole positioned at the lower part, the upper part of the waist-shaped hole is communicated with the round hole, and the axis of the waist-shaped hole is arranged along the vertical direction. The width of the waist-shaped hole in the front-back direction corresponds to the distance between the two planes of the lockable pin shaft.

The technical scheme based on the corresponding technical schemes is as follows: the outer end of the escape ramp component is provided with a pull rope for retracting the escape ramp component.

The top hinged linkage device comprises a winding reel assembly, an escape door mounting arm, a ratchet block linkage pin, a ratchet block and a mounting seat. The take-up reel assembly includes a first drive gear and a second drive gear. The first driving gear is rotatably arranged on the left part of the mounting seat, and a transmission connecting square hole is formed in the rotating shaft of the first driving gear. The second transmission gear is rotatably arranged on the left part of the mounting seat and meshed with the first driving gear.

The two escape door mounting arms are respectively called a left escape door mounting arm and a right escape door mounting arm according to the difference of the left position and the right position of the two escape door mounting arms. The two escape door mounting arms are coaxially and rotatably arranged on the mounting seat. The escape door is fixedly connected to the two escape door mounting arms. The winding shaft is rotatably arranged on the right part of the mounting seat. The second transmission gear is in transmission connection with the winding shaft through a corresponding transmission shaft, and one end of the inhaul cable is fixedly arranged on the winding shaft.

The upper part of the ratchet block is rotatably connected and arranged on the left part of the mounting seat, and under the action of the corresponding torsion spring, the ratchet at the lower part of the ratchet block is meshed with the first driving gear so as to enable the first driving gear to rotate only in one direction. The right part of the ratchet block is provided with a transmission baffle.

The ratchet block linkage pin is arranged on the left escape door mounting arm in a left-right sliding mode and driven by the corresponding compression spring to extend leftwards to the position below the transmission baffle of the ratchet block, so that when the escape door is opened upwards, the ratchet block is driven by the ratchet block linkage pin to be upwards separated from the first driving gear, and the first driving gear can rotate reversely.

The technical scheme based on the corresponding technical schemes is as follows: the pedal frame components are divided into two groups, and the two groups of pedal frame components are respectively called a left pedal frame component and a right pedal frame component according to the left position and the right position of the pedal frame components.

The left pedal frame assembly comprises a left first support rod, a left second support rod, a left first buffer device and a left pull rod. The articulated fixed connection of the one end of the first bracing piece in left side is on the lower part left side of installation door frame, and the other end is articulated fixed connection with left side second bracing piece, is 180 degrees after left side first bracing piece and left side second bracing piece expand, and left side second bracing piece upturns and opens. The first buffer device on the left side adopts a stretching cylinder, one end of the stretching cylinder is hinged to the left side of the installation door frame, and the other end of the stretching cylinder is hinged to the first support rod on the left side. The left side pull rod comprises two connecting rods which are hinged together, one end of the left side pull rod is hinged to the installation door frame, and the other end of the left side pull rod is hinged to the hinged position of the left side first supporting rod and the left side second supporting rod.

The right pedal frame assembly comprises a right first support rod, a right second support rod, a right first buffer device and a right pull rod.

The articulated fixed connection of the one end of the first bracing piece in right side is on the lower part right side of installation door frame, and the other end is articulated fixed connection with right side second bracing piece, is 180 degrees after right side first bracing piece and right side second bracing piece expand, and right side second bracing piece upwards overturns and opens. The first buffer device on the right side adopts a stretching cylinder, one end of the stretching cylinder is hinged to the right side of the installation door frame, and the other end of the stretching cylinder is hinged to the first support rod on the right side. The right side pull rod comprises two connecting rods which are hinged together, one end of the right side pull rod is hinged to the installation door frame, and the other end of the right side pull rod is hinged to the hinged position of the right side first supporting rod and the right side second supporting rod.

The pedals are 4, and the 4 pedals are called a first pedal, a second pedal, a third pedal and a fourth pedal from front to back.

The first pedal is fixedly arranged between the front part of the left second supporting rod and the front part of the right second supporting rod of the pedal frame assembly.

The front part of the second pedal is rotatably arranged between the left second supporting rod and the right second supporting rod and is positioned behind the first pedal. The rear part of the second pedal is hinged with the third pedal, and the rear part of the third pedal is rotatably arranged between the left first supporting rod and the right first supporting rod and is positioned in front of the fourth pedal. And a stretching cylinder is respectively arranged between the left side and the right side of the rear part of the lower side of the second pedal and the left side and the right side of the front part of the lower side of the third pedal, and the stretching cylinders play a role in buffering and stretching when the second pedal and the third pedal are unfolded.

The fourth pedal is fixedly arranged between the rear part of the left first supporting rod and the rear part of the right first supporting rod of the pedal frame assembly.

The technical scheme based on the corresponding technical schemes is as follows: the escape ramp component further comprises two groups of opening devices, and the two groups of opening devices are identical in structure and comprise compression springs and supporting platforms. The two groups of opening devices are respectively and fixedly connected on the left side and the right side of the lower part of the installation door frame by respective compression springs. The supporting platform is fixedly arranged at the upper end of the compression spring, and the compression spring is vertically arranged along the vertical direction. The rear end of the first support rod on the left side is provided with a guide roller, and the rotation axis of the guide roller is parallel to the hinge axis of the first support rod on the left side and the hinge axis of the installation door frame. When the first left supporting rod and the second left supporting rod are folded, the guide roller at the rear end of the first left supporting rod is pressed on the supporting platform of the opening device on the left side from the upper part to the lower part, so that the compression spring is in a compressed state.

The rear end of the first support rod on the right side is provided with a guide roller, and the rotation axis of the guide roller is parallel to the hinge axis of the first support rod on the right side and the hinge axis of the installation door frame. When the first right supporting rod and the second right supporting rod are folded, the guide roller at the rear end of the first right supporting rod is pressed on the supporting platform of the opening device on the right side from the upper part downwards, so that the compression spring is in a compression state.

The technical scheme based on the corresponding technical schemes is as follows: the pedal locking device is further included. The pedal locking device comprises a pedal locking pin, a U-shaped limiting clamp torsion spring, an unlocking wrench and a wrench torsion spring. The pedal locking pin is fixedly arranged on the rear part of the inner side of the second support rod on the right side of the pedal frame, extends to the lower part of the second pedal towards the inside of the frame, and the axis of the pedal locking pin is parallel to the rotation axis of the pedal when the pedal is unfolded. The U-shaped limiting clamp is rotatably arranged on the second pedal from one end of the U-shaped connecting part, and the U-shaped limiting clamp torsion spring is used for keeping the opening of the U-shaped limiting clamp in a state of being parallel to the second supporting rod on the right side. The lower side of the U-shaped connecting part of the U-shaped limiting clamp is provided with a bayonet. The unlocking wrench is rotatably arranged on the second pedal, and the lower part of the unlocking wrench extends downwards out of the second pedal. The upper portion of unblock spanner is equipped with spacing lug, and spacing lug stretches into in the bayonet socket of the spacing card of U-shaped for prevent the opening of the spacing card of U-shaped to open downwards, and the spanner torsional spring is used for making the spacing lug of unblock spanner keep in the bayonet socket.

The invention has the following beneficial effects: (1) the escape device of the subway locomotive has a simple structure, and the escape door is opened upwards, so that a window can be arranged on the escape door, the visual field of the escape door is greatly improved, and the adaptive reliability is further improved. (2) The lower part of the escape door of the escape device of the subway locomotive is provided with the illuminating lamp which is positioned above the pedal when the escape door is opened, so that the escape device is more beneficial to escape and rescue. (3) The door lock device of the escape device of the subway locomotive is provided with the emergency unlocking handle, so that the emergency unlocking handle can be used for unlocking when the unlocking device fails to unlock, and the safety and the reliability of use are further improved. (4) The escape device of the subway locomotive is provided with the external unlocking push rod, the escape door is unlocked through the outside, and the escape door can be opened from the outside when an inside person cannot operate, so that the use safety is further improved. (5) The unlocking device of the escape device of the subway locomotive is provided with the unlocking protective cover, so that accidents caused by the fact that the escape door is opened due to mistaken touch of the unlocking push rod can be avoided. (6) The top hinged linkage device of the escape device of the subway locomotive is simple in structure, and the first driving gear is unlocked through the ratchet block linkage pin while the escape door is opened, so that the pedal frame assembly is released. (7) The escape ramp component of the escape device of the subway locomotive is provided with the buffer device, so that the ramp is more stable when being unfolded and is not easy to damage. (8) The escape ramp component of the escape device of the subway locomotive is provided with the pull rod, so that the bearing capacity of the ramp is improved. (9) The first pedal and the fourth pedal of the escape ramp component of the escape device of the subway locomotive are fixedly installed, and the second pedal and the third pedal are locked by the pedal locking device after being unfolded, so that the smoothness and the stability of the ramp are ensured, and the use safety is greatly improved.

Drawings

Fig. 1 is a schematic structural view of an escape device of a subway locomotive according to the present invention.

Fig. 2 is a perspective view of the escape device of the subway locomotive in an unfolded use state.

Fig. 3 is a schematic view as viewed from the left rear of fig. 2.

Fig. 4 is a schematic structural view of the escape door.

FIG. 5 is a schematic view of the top articulation linkage.

Fig. 6 is a schematic structural view of the escape door as viewed from the rear upper side.

Fig. 7 is a schematic structural view of the door lock device.

Fig. 8 is a schematic structural view of the right portion of the door lock device as viewed from the upper right front of fig. 7.

Fig. 9 is a schematic structural view of the left portion of the door lock device as viewed from the front left upper side of fig. 7.

Fig. 10 is a schematic structural view of the unlocking device.

FIG. 11 is a schematic view of the construction of the top hinge assembly.

Fig. 12 is a perspective view of fig. 11 as viewed from the front left upper side.

Fig. 13 is a schematic view of the structure of the door frame when viewed from the front.

Fig. 14 is a schematic view showing the construction of the escape ramp assembly when deployed and with the door frame installed.

FIG. 15 is a schematic view of the structure of the step of the ramp assembly.

Fig. 16 is a schematic view of the structure of the pedal frame assembly of the ramp assembly.

Fig. 17 is a schematic structural view of the pedal lock device.

The reference numbers in the drawings are:

an escape door 1, a transparent window 1-1, a lighting lamp 1-2,

the device comprises a door lock device 2, an unlocking turntable 2-1, a locking pin 2-2, a locking pin pull rod 2-3, a lock bolt limiting clamp 2-4, an emergency unlocking handle 2-5, an external unlocking push rod 2-6, an external unlocking connecting rod 2-7, a door lock mounting seat 2-8, a locking extension spring 2-9 and a positioning pin 2-10,

an unlocking device 3, an unlocking push rod 3-1, an unlocking protective cover 3-2, a lockable pin shaft 3-3, a protective cover pin shaft hole 3-4,

a door frame 4 and a lock bolt hole 4-1 are arranged,

a top hinged linkage device 5, a winding reel component 5-1, a first driving gear 5-11, a second driving gear 5-12, an escape door mounting arm 5-2, a left escape door mounting arm 5-2a, a right escape door mounting arm 5-2b, a ratchet block linkage pin 5-3, a ratchet block 5-4 and a mounting seat 5-5,

an escape ramp component 6, a pull rope 6a, a winding shaft 6b, a left safety protection belt 6-c1, a right safety protection belt 6-c2,

a pedal frame component 6-1, a left pedal frame component 6-11, a left first support rod 6-11-1, a left second support rod 6-11-2, a left first buffer device 6-11-3, a left pull rod 6-11-4,

a right pedal frame component 6-12, a right first support rod 6-12-1, a right second support rod 6-12-2, a right first buffer device 6-12-3, a right pull rod 6-12-4,

a pedal 6-2, a first pedal 6-21, a second pedal 6-22, a third pedal 6-23, a fourth pedal 6-24,

an opening device 6-3, a compression spring 6-31, a support platform 6-32,

the device comprises a pedal locking device 7, a pedal locking pin 7-1, a U-shaped limiting clamp 7-2, a U-shaped limiting clamp torsion spring 7-3, an unlocking wrench 7-4 and a wrench torsion spring 7-5.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. The orientation of the present invention is described according to the orientation shown in fig. 1, that is, the up-down and left-right directions shown in fig. 1 are the up-down and left-right directions described, the side facing fig. 1 is the rear side (i.e., the inside of the vehicle compartment), and the side facing away from fig. 1 is the front side (i.e., the door opening direction).

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It is to be understood that the terms "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention or for simplifying the description, but do not indicate that a particular orientation must be present.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

(example 1)

Referring to fig. 1 to 17, the escape device of a subway locomotive of the present invention includes an escape door 1, a door lock device 2, an unlocking device 3, a mounting door frame 4, a top hinge linkage 5, an escape ramp assembly 6, and a pedal locking device 7.

Referring to fig. 1 to 17, a transparent window 1-1 is provided at an upper portion of the escape door 1. The top hinged linkage device 5 is fixedly arranged on a door opening of the subway locomotive. The upper part of the escape door 1 is rotatably connected and arranged on a door opening of the subway locomotive through a top hinged linkage device 5. The lower part of the escape door 1 is provided with an illuminating lamp 1-2. The installation door frame 4 is fixedly arranged in a door opening of the subway locomotive. The door lock device 2 is used for locking and fixedly connecting the lower part of the escape door 1 with the installation door frame 4. The unlocking device 3 is used for controlling the door lock device 2, so that the escape door 1 can be separated from the installation door frame 4 and turned upwards for opening. The left side and the right side of the escape door 1 are provided with air springs, one end of each air spring is hinged to the escape door 1, the other end of each air spring is hinged to the corresponding position of the installation door frame 4, and the air springs are used for keeping the escape door 1 in a turnover opening state. One end of the escape ramp component 6 is hinged to the lower end of the installation door frame 4, the other end of the escape ramp component 6 is provided with a pull rope 6a, and the other end of the pull rope 6a is fixedly arranged on a winding shaft 6 b.

Referring to fig. 1 to 3 and 6 to 9, the door lock device 2 includes a latch, an unlocking turntable 2-1, a locking pin 2-2, a locking pin lever 2-3, a latch stopper 2-4, an emergency unlocking handle 2-5, an external unlocking push rod 2-6, an external unlocking link 2-7, and a door lock mounting seat 2-8.

Referring to fig. 13, the bolts are fixedly provided on the lower left and right sides of the installation door frame 4 to protrude from the bolt holes 4-1 of the installation door frame 4 toward the inside of the installation door frame 4 (the bolts are not shown). The lock bolt is a cylindrical shaft.

Referring to fig. 6 to 9, the unlocking turntable 2-1 is rotatably provided on the middle portion of the door lock mounting seat 2-8. The emergency unlocking handle 2-5 is fixedly arranged on the unlocking rotary table 2-1, and the emergency unlocking handle 2-5 is pulled to enable the unlocking rotary table 2-1 to rotate. The two locking pins 2-2 are arranged, the two locking pins 2-2 are respectively arranged on the left side and the right side of the door lock mounting seat 2-8 in a sliding mode, and the two locking pins 2-2 are arranged by sliding along the axis in the left-right direction. The two locking pin pull rods 2-3 are provided, one locking pin pull rod 2-3 is used for being in transmission connection with the locking pin 2-2 positioned on the left side and the unlocking rotary table 2-1, and the other locking pin pull rod 2-3 is used for being in transmission connection with the locking pin 2-2 positioned on the right side and the unlocking rotary table 2-1, so that the unlocking rotary table 2-1 is rotated to enable the two locking pins 2-2 to synchronously move in the opposite direction. A locking pressure extension spring 2-9 is arranged between the locking pin pull rod 2-3 and the door lock mounting seat 2-8, and the locking extension spring 2-9 is used for moving the locking pin pull rod 2-3 outwards so as to enable the locking pin 2-2 to extend outwards. Two lock bolt limiting clamps 2-4 are arranged, and the two lock bolt limiting clamps 2-4 are respectively and rotatably arranged on the left side and the right side of the door lock mounting seat 2-8. The latch position-limiting card 2-4 includes a U-shaped locking portion and a position-limiting portion 2-41. The front part of the lock bolt limiting card 2-4 is provided with a corresponding positioning pin 2-10. The lock bolt limiting clamps 2-4 keep the U-shaped openings towards the upper rear direction through corresponding torsion springs. When the door is closed, the lock bolt enters between two ends of the U-shaped locking part of the lock bolt limiting card 2-4, then the lock bolt limiting card 2-4 is driven to rotate backwards to enable the U-shaped opening of the U-shaped locking part to face upwards, then the locking pin 2-2 extends outwards to the upper part of the limiting part 2-41 of the lock bolt limiting card 2-4, and the lock bolt limiting card 2-4 cannot rotate forwards to be opened, so that a locking structure is formed with the lock bolt. The external unlocking push rod 2-6 is arranged on the left side of the door lock mounting seat 2-8 in a left-right sliding mode through the axis of the external unlocking push rod 2-6, the external unlocking connecting rod 2-7 is connected between the external unlocking push rod 2-6 and the locking pin pull rod 2-3 located on the left side in a transmission mode, and the external unlocking push rod 2-6 is pushed to drive the locking pin pull rod 2-3 to move, so that the unlocking purpose can be achieved. Corresponding wrenches are arranged outside the subway locomotive, and the wrenches are in transmission connection with corresponding ejector rods to push the external unlocking push rods 2-6 to move inwards, so that the aim of unlocking outside the subway locomotive is fulfilled.

Referring to fig. 1 to 3, 6 and 10, the unlocking means 3 includes an unlocking push rod 3-1 and an unlocking shield 3-2. Two ends of an unlocking push rod 3-1 are rotatably arranged on the escape door 1, the axis of the unlocking push rod 3-1 is parallel to the rotation axis of the unlocking push rod 3-1, the unlocking push rod 3-1 is fixedly connected with an unlocking turntable 2-1 of the door lock device 2 through a steel wire rope, so that when the unlocking push rod 3-1 is pushed upwards to rotate, the steel wire rope is driven to pull the unlocking turntable 2-1 to rotate for unlocking, and the escape door 1 is upwards supported by an air spring (not shown in the figure).

The left side and the right side of the unlocking protective cover 3-2 are rotatably arranged in corresponding protective cover pin shaft holes 3-4 on the escape door 1 through lockable pin shafts 3-3. The unlocking protective cover 3-2 covers the unlocking push rod 3-1 from the upper part and the front part and is used for preventing the escape door 1 from being opened due to the fact that the unlocking push rod 3-1 is pushed by mistake. The rotary connection part (the part positioned in the pin shaft hole 3-4 of the protective cover) of the lockable pin shaft 3-3 is provided with two planes which are parallel to each other in the front and back, and the two planes are parallel to the axis of the lockable pin shaft 3-3. The protective cover pin shaft hole 3-4 comprises a round hole positioned at the upper part and a waist-shaped hole positioned at the lower part, the upper part of the waist-shaped hole is communicated with the round hole, and the axis of the waist-shaped hole is arranged along the vertical direction. The width of the waist-shaped hole in the front-back direction corresponds to the distance between two planes of the lockable pin shaft 3-3. Therefore, when the unlocking protective cover 3-2 is opened upwards, the two planes of the lockable pin shaft 3-3 slide downwards into the waist-shaped hole at the lower part of the pin shaft hole 3-4 of the protective cover, and the unlocking protective cover 3-2 is kept in an opened state and cannot be closed downwards. When the unlocking protective cover 3-2 needs to be closed, the unlocking protective cover 3-2 is lifted upwards, the lockable pin shaft 3-3 moves upwards to a round hole in the upper part of the pin shaft hole 3-4 of the protective cover, then the locking pin shaft rotates downwards to be closed, and the upper part and the front part of the unlocking push rod 3-1 are covered.

Referring to fig. 1 to 3, 5, 11 and 12, the top hinge linkage 5 includes a wire reel assembly 5-1, an escape door mounting arm 5-2, a ratchet block linkage pin 5-3, a ratchet block 5-4 and a mounting seat 5-5.

The wire reel assembly 5-1 includes a first driving gear 5-11 and a second driving gear 5-12. The first driving gear 5-11 is rotatably arranged on the left part of the mounting seat 5-5, a transmission connecting square hole is arranged on a rotating shaft of the first driving gear 5-11 and is in transmission connection with the connecting square hole through a corresponding wrench, so that the first driving gear 5-11 can be driven to rotate through the wrench. The second transmission gear 5-12 is rotatably arranged on the left part of the mounting seat 5-5 and is meshed with the first driving gear 5-11.

The escape door mounting arms 5-2 are two, and the two escape door mounting arms 5-2 are respectively called a left escape door mounting arm 5-2a and a right escape door mounting arm 5-2b according to the left and right positions of the two escape door mounting arms. The two escape door mounting arms 5-2 are coaxially and rotatably arranged on the mounting seats 5-5. The escape door 1 is fixedly connected to the two escape door mounting arms 5-2. The spool 6b is rotatably provided on the right portion of the mount 5-5. The second transmission gears 5-12 are in transmission connection with the winding shaft 6b through corresponding transmission shafts.

The upper part of the ratchet block 5-4 is rotatably connected and arranged on the left part of the mounting seat 5-5, and under the action of a corresponding torsion spring, the ratchet at the lower part is meshed with the first driving gear 5-11, so that the first driving gear 5-11 can only rotate in one direction. The right part of the ratchet block 5-4 is provided with a transmission baffle 5-41.

The ratchet block linkage pin 5-3 is arranged on the left escape door mounting arm 5-2a in a left-right sliding mode and driven by a corresponding compression spring to extend leftwards into the position below a transmission baffle 5-41 of the ratchet block 5-4, so that when the escape door 1 is opened upwards, the ratchet block linkage pin 5-3 drives the ratchet block 5-4 to be upwards separated from the first driving gear 5-11, and the first driving gear 5-11 can rotate reversely.

Referring to fig. 1 to 3 and 14 to 16, escape ramp assembly 6 includes a pedal frame assembly 6-1, a pedal 6-2, and an opening device 6-3. Two groups of opening devices 6-3 are provided, and the two groups of opening devices 6-3 have the same structure and respectively comprise a compression spring 6-31 and a supporting platform 6-32. Two sets of opening devices 6-3 are fixedly connected to the left and right sides of the lower portion of the installation doorframe 4 by respective compression springs 6-31. The supporting platform 6-31 is fixedly arranged at the upper end of the compression spring 6-31, and the compression spring 6-31 is vertically arranged along the up-down direction.

The pedal frame components 6-1 are divided into two groups, and the two groups of pedal frame components 6-1 are respectively called a left pedal frame component 6-11 and a right pedal frame component 6-12 according to the left and right positions of the pedal frame components.

The left pedal frame assembly 6-11 comprises a left first support rod 6-11-1, a left second support rod 6-11-2, a left first buffer device 6-11-3 and a left pull rod 6-11-4.

One end of the left first supporting rod 6-11-1 is hinged and fixedly connected to the left side of the lower part of the installation door frame 4, the other end of the left first supporting rod is hinged and fixedly connected with the left second supporting rod 6-11-2, the left first supporting rod 6-11-1 and the left second supporting rod 6-11-2 are unfolded to form an angle of 180 degrees, and the left second supporting rod 6-11-2 is turned upwards and opened. The left safety guard 6-c1 is provided on the left and left first support bar 6-11-1 and the left second support bar 6-11-2 of the installation doorframe 4.

The other end of the second support bar 6-11-2 on the left side is fixedly connected with a pull rope 6 a. The first left buffer device 6-11-3 adopts a stretching cylinder, one end of the stretching cylinder is hinged on the left side of the installation door frame 4, and the other end of the stretching cylinder is hinged on the first left support rod 6-11-1. The rear end of the left first supporting rod 6-11-1 is provided with a guide roller 6-11-11, and the rotation axis of the guide roller 6-11-11 is parallel to the hinge axis of the left first supporting rod 6-11-1 and the hinge axis of the installation door frame 4. When the first left support bar 6-11-1 and the second left support bar 6-11-2 are folded, the guide roller 6-11-11 at the rear end of the first left support bar 6-11-1 presses downward from above against the support platform 6-32 of the opening device 6-3 located on the left side, so that the compression spring 6-31 is in a compressed state. The left side pull rod 6-11-4 is composed of two connecting rods which are hinged together, one end of the left side pull rod 6-11-4 is hinged to the installation door frame 4, and the other end of the left side pull rod 6-11-4 is hinged to the hinged position of the left side first supporting rod 6-11-1 and the left side second supporting rod 6-11-2.

The right pedal frame assembly 6-12 comprises a right first support rod 6-12-1, a right second support rod 6-12-2, a right first buffer device 6-12-3 and a right pull rod 6-12-4.

One end of the right first supporting rod 6-12-1 is hinged and fixedly connected to the right side of the lower part of the door frame 4, the other end of the right first supporting rod is hinged and fixedly connected with the right second supporting rod 6-12-2, the right first supporting rod 6-12-1 and the right second supporting rod 6-12-2 are unfolded to form an angle of 180 degrees, and the right second supporting rod 6-12-2 is turned upwards and opened. The right safety guard 6-c2 is provided on the right side of the installation doorframe 4 and on the right first support bar 6-12-1 and the right second support bar 6-12-2.

The first right buffer device 6-12-3 adopts a stretching cylinder, one end of the stretching cylinder is hinged on the right side of the installation door frame 4, and the other end of the stretching cylinder is hinged on the first right support rod 6-12-1. The rear end of the right first supporting rod 6-12-1 is provided with a guide roller 6-12-11, and the rotation axis of the guide roller 6-12-11 is parallel to the hinge axis of the right first supporting rod 6-12-1 and the hinge axis of the installation door frame 4. When the right first supporting rod 6-12-1 and the right second supporting rod 6-12-2 are folded, the guide roller 6-12-11 at the rear end of the right first supporting rod 6-12-1 is pressed downwards from above onto the supporting platform 6-32 of the opening device 6-3 on the right side, so that the compression spring 6-31 is in a compressed state. The right side pull rod 6-12-4 is composed of two connecting rods which are hinged together, one end of the right side pull rod 6-12-4 is hinged to the installation door frame 4, and the other end is hinged to the hinged position of the right side first supporting rod 6-12-1 and the right side second supporting rod 6-12-2.

The pedal 6-2 has 4 pedals, and the 4 pedals 6-2 are called a first pedal 6-21, a second pedal 6-22, a third pedal 6-23 and a fourth pedal 6-24 from front to back.

The first pedal 6-21 is fixedly arranged between the front part of the left second support bar 6-11-2 and the front part of the right second support bar 6-12-2 of the pedal frame assembly 6-1.

The front part of the second pedal 6-22 is rotatably arranged between the left second support rod 6-11-2 and the right second support rod 6-12-2 and is positioned behind the first pedal 6-21. The rear part of the second pedal 6-22 is hinged with the third pedal 6-23, and the rear part of the third pedal 6-23 is rotatably arranged between the left first supporting rod 6-11-1 and the right first supporting rod 6-12-1 and is positioned in front of the fourth pedal 6-24. And a stretching cylinder is respectively arranged between the left side and the right side of the rear part of the lower side of the second pedal 6-22 and the left side and the right side of the front part of the lower side of the third pedal 6-23, and plays a role in buffering and stretching when the second pedal 6-22 and the third pedal 6-23 are unfolded.

The fourth pedal 6-24 is fixedly disposed between the rear portion of the left first support bar 6-11-1 and the rear portion of the right first support bar 6-12-1 of the pedal frame assembly 6-1.

Referring to fig. 3, 16 and 17, the pedal locking device 7 includes a pedal locking pin 7-1, a U-shaped limit clip 7-2, a U-shaped limit clip torsion spring 7-3, an unlocking wrench 7-4 and a wrench torsion spring 7-5. The pedal locking pin 7-1 is fixedly arranged on the inner rear part of the right second supporting rod 6-12-2 of the pedal frame 6-1, extends towards the inside of the frame to be below the second pedal 6-22, and the axis of the pedal locking pin is parallel to the rotation axis of the pedal when the pedal is unfolded. The U-shaped limit clamp 7-2 is rotatably arranged on the second pedal 6-22 from one end of the U-shaped connecting part thereof, and the U-shaped limit clamp torsion spring 7-3 is used for keeping the opening of the U-shaped limit clamp 7-2 in a state of being parallel to the right second supporting rod 6-12-2. The lower side of the U-shaped connecting part of the U-shaped limiting card 7-2 is provided with a bayonet 7-21. The unlocking wrench 7-4 is rotatably arranged on the second pedal 6-22, and the lower part of the unlocking wrench 7-4 extends downwards out of the second pedal 6-22. The upper part of the unlocking wrench 7-4 is provided with a limiting lug 7-41, the limiting lug 7-41 extends into the bayonet 7-21 of the U-shaped limiting card 7-2 and is used for preventing the opening of the U-shaped limiting card 7-2 from being opened downwards, and the wrench torsion spring 7-5 is used for keeping the limiting lug 7-41 of the unlocking wrench 7-4 in the bayonet 7-21. When the pedal locking device is used, when the second pedal 6-22 is unfolded, the U-shaped limiting clamp 7-2 contacts the pedal locking pin 7-1 on the second pedal 6-22 downwards, the opening part of the U-shaped limiting clamp 7-2 moves upwards, when the pedal locking pin 7-1 moves upwards to the opening part of the U-shaped limiting clamp 7-2, the opening part of the U-shaped limiting clamp 7-2 is reset downwards under the action of the U-shaped limiting clamp torsion spring 7-3, and the pedal locking pin 7-1 is fixed in the U-shaped limiting clamp 7-2 in a limiting way. When unlocking is needed, the unlocking wrench 7-4 is pulled, the limiting lug 7-41 of the unlocking wrench 7-4 is separated from the bayonet 7-21 of the U-shaped limiting card 7-2, the second pedal 6-22 is folded upwards, the pedal locking pin 7-1 drives the opening of the U-shaped limiting card 7-2 to be opened downwards, after the pedal locking pin 7-1 is separated from the U-shaped limiting card 7-2, the U-shaped limiting card 7-2 is reset upwards under the action of the U-shaped limiting card torsion spring 7-3, and then the unlocking wrench 7-4 is loosened.

When the escape device of the subway locomotive is used, the following steps are carried out: the unlocking protective cover 3-2 is opened upwards firstly, two planes of the lockable pin shaft 3-3 slide downwards into a waist-shaped hole at the lower part of the pin shaft hole 3-4 of the protective cover, and the unlocking protective cover 3-2 is kept in an opened state and cannot be closed downwards. Then, when the unlocking push rod 3-1 is pushed upwards to rotate, the steel wire rope is driven to pull the unlocking rotary disc 2-1 to rotate, the locking pin 2-2 is pulled to move inwards through the locking pin pull rod 2-3 to be separated from the upper side of the limiting part 2-41 of the lock bolt limiting clamp 2-4, meanwhile, the escape door 1 is pushed outwards, the lock bolt limiting clamp 2-4 rotates backwards under the action of the torsion spring and the lock bolt, so that the lock bolt can be separated from the lock bolt limiting clamp 2-4, and then the escape door 1 is upwards supported by the gas spring. When the escape door 1 is supported, the ratchet block linkage pin 5-3 drives the ratchet block 5-4 to be upwards separated from the first driving gear 5-11, the first driving gear 5-11 can rotate freely, so that the pedal frame assembly 6-1 is jacked up by the opening device 6-3, the left first supporting rod 6-11-1 and the right first supporting rod 6-12-1 fall forwards, the left second supporting rod 6-11-2 and the right second supporting rod 6-12-2 are overturned and opened forwards from the upper part, and the second pedal 6-22 is locked in the unfolded state by the pedal locking device 7 after the second pedal 6-22 and the third pedal 6-23 are unfolded, so that the escape ramp is formed. After the escape door is used, when the escape door needs to be folded, the ratchet block linkage pin 5-3 is pulled rightwards to be separated from the transmission baffle plate 5-41 of the ratchet block 5-4, the ratchet block 5-4 and the first driving gear 5-11 form a ratchet mechanism, then the first driving gear 5-11 is rotated through a corresponding tool to further drive the second transmission gear 5-12 and the winding reel 6b to rotate, the winding reel 6b winds the inhaul cable 6a on the winding reel 6b, so that the pedal frame assembly 6-1 is pulled back through the inhaul cable 6a, and meanwhile, the pedal locking pin 7-1 needs to be unlocked, and the second pedal 6-22 and the third pedal 6-23 are folded backwards together. And finally, the escape door 1 is pulled back.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an escape device of subway locomotive, includes emergency exits, locks, unlocking device and installation door frame, and the installation door frame is fixed to be set up in the door opening of subway locomotive, and locks is used for the lower part of emergency exits and installation door frame locking fixed connection, its characterized in that: the escape ramp component is hinged to the top of the escape ramp component;

a transparent window is arranged at the upper part of the escape door; the top hinged linkage device is fixedly arranged on a door opening of the subway locomotive; the upper part of the escape door is rotatably connected and arranged on a door opening of the subway locomotive through a top hinged linkage device; the unlocking device is used for controlling the door lock device, so that the escape door can be separated from the installation door frame and turned upwards for opening; the left side and the right side of the escape door are respectively provided with a gas spring, one end of each gas spring is hinged to the escape door, the other end of each gas spring is hinged to the corresponding position of the installation door frame, and each gas spring is used for keeping the escape door in a turnover opening state; the escape ramp component comprises a pedal frame component and a pedal; the pedal frame component is hinged to the lower part of the installation door frame; the pedal sets up on pedal frame subassembly, and pedal frame subassembly forms the ramp of fleing after expanding.

2. The escape device for a subway locomotive according to claim 1, wherein: the door lock device comprises a lock bolt, an unlocking rotary table, a locking pin pull rod, a lock bolt limiting card and a door lock mounting seat;

the lock bolts are fixedly arranged on the left side and the right side of the lower part of the installation door frame and extend into the installation door frame from lock bolt holes on the installation door frame; the lock bolt is a cylindrical shaft;

the unlocking turntable is rotatably arranged on the middle part of the door lock mounting seat; the two locking pins are respectively arranged on the left side and the right side of the door lock mounting seat in a sliding manner, and are arranged in a sliding manner along the left-right direction by the axes of the two locking pins; the two locking pin pull rods are provided, one locking pin pull rod is used for being in transmission connection with the locking pin on the left side and the unlocking turntable, and the other locking pin pull rod is used for being in transmission connection with the locking pin on the right side and the unlocking turntable, so that the unlocking turntable is rotated to enable the two locking pins to synchronously move in the opposite direction; a locking pressure extension spring is arranged between the locking pin pull rod and the door lock mounting seat and used for moving the locking pin pull rod outwards so as to enable the locking pin to extend outwards; the two lock bolt limiting clamps are respectively and rotatably arranged on the left side and the right side of the door lock mounting seat; the lock bolt limiting card comprises a U-shaped locking part and a limiting part; the front part of the lock bolt limiting clamp is provided with a corresponding positioning pin; the lock bolt limiting cards keep the U-shaped openings facing the upper rear direction through the corresponding torsion springs.

3. The escape device for a subway locomotive according to claim 2, wherein: the door lock device further comprises an emergency unlocking handle, the emergency unlocking handle is fixedly arranged on the unlocking turntable, and the emergency unlocking handle is pulled to enable the unlocking turntable to rotate.

4. The escape device for a subway locomotive according to claim 2, wherein: the door lock device also comprises an external unlocking push rod and an external unlocking connecting rod; the external unlocking push rod is arranged on the left side of the door lock mounting seat in a left-right sliding mode through the axis of the external unlocking push rod, the external unlocking connecting rod is connected between the external unlocking push rod and the locking pin pull rod located on the left side in a transmission mode, the external unlocking push rod is pushed to drive the locking pin pull rod to move, and therefore the purpose of unlocking can be achieved.

5. The escape device for a subway locomotive according to claim 2, wherein: the unlocking device comprises an unlocking push rod; the two ends of the unlocking push rod are rotatably arranged on the escape door, the axis of the unlocking push rod is parallel to the rotation axis of the unlocking push rod, and the unlocking push rod is fixedly connected with the unlocking turntable of the door lock device through a steel wire rope, so that when the unlocking push rod is pushed upwards to rotate, the steel wire rope is driven to pull the unlocking turntable to rotate for unlocking.

6. The escape device for a subway locomotive according to claim 5, wherein: the unlocking device also comprises an unlocking protective cover; the left side and the right side of the unlocking protective cover are rotatably arranged in corresponding protective cover pin shaft holes on the escape door through lockable pin shafts; the unlocking protective cover covers the unlocking push rod from the upper part and the front part and is used for preventing the escape door from being opened due to mistakenly pushing the unlocking push rod; the rotary connecting part of the lockable pin shaft is provided with two planes which are parallel to each other front and back, and the two planes and the axis of the lockable pin shaft are parallel to each other; the pin shaft hole of the protective cover comprises a round hole positioned at the upper part and a waist-shaped hole positioned at the lower part, the upper part of the waist-shaped hole is communicated with the round hole, and the axis of the waist-shaped hole is arranged along the vertical direction; the width of the waist-shaped hole in the front-back direction corresponds to the distance between the two planes of the lockable pin shaft.

7. The escape device for a subway locomotive according to claim 1, wherein: the outer end of the escape ramp component is provided with a pull rope for retracting the escape ramp component;

the top hinged linkage device comprises a winding reel assembly, an escape door mounting arm, a ratchet block linkage pin, a ratchet block and a mounting seat; the winding roll assembly comprises a first driving gear and a second driving gear; the first driving gear is rotatably arranged on the left part of the mounting seat, and a rotating shaft of the first driving gear is provided with a connecting square hole for transmission; the second transmission gear is rotatably arranged on the left part of the mounting seat and is meshed with the first driving gear;

the two escape door mounting arms are respectively called a left escape door mounting arm and a right escape door mounting arm according to the difference of the left position and the right position of the two escape door mounting arms; the two escape door mounting arms are coaxially and rotatably arranged on the mounting seat; the escape doors are fixedly connected to the two escape door mounting arms; the winding shaft is rotatably arranged on the right part of the mounting seat; the second transmission gear is in transmission connection with the winding shaft through a corresponding transmission shaft, and one end of the inhaul cable is fixedly arranged on the winding shaft;

the upper part of the ratchet block is rotatably connected and arranged on the left part of the mounting seat, and under the action of a corresponding torsion spring, the ratchet at the lower part of the ratchet block is meshed with the first driving gear and is used for enabling the first driving gear to rotate only in one direction; the right part of the ratchet block is provided with a transmission baffle;

8. The escape device for a subway locomotive according to claim 1, wherein: the two groups of pedal frame components are respectively called as a left pedal frame component and a right pedal frame component according to the left and right positions of the pedal frame components;

the left pedal frame component comprises a left first support rod, a left second support rod, a left first buffer device and a left pull rod; one end of the left first supporting rod is hinged and fixedly connected to the left side of the lower part of the installation door frame, the other end of the left first supporting rod is hinged and fixedly connected with the left second supporting rod, the left first supporting rod and the left second supporting rod are unfolded to form an angle of 180 degrees, and the left second supporting rod is turned upwards and opened; the first left buffer device adopts a stretching cylinder, one end of the stretching cylinder is hinged to the left side of the installation door frame, and the other end of the stretching cylinder is hinged to a first left support rod; the left pull rod consists of two connecting rods which are hinged together, one end of the left pull rod is hinged to the installation door frame, and the other end of the left pull rod is hinged to the hinged position of the left first supporting rod and the left second supporting rod;

the right pedal frame component comprises a right first support rod, a right second support rod, a right first buffer device and a right pull rod;

one end of the right first supporting rod is hinged and fixedly connected to the right side of the lower part of the installation door frame, the other end of the right first supporting rod is hinged and fixedly connected with the right second supporting rod, the right first supporting rod and the right second supporting rod are unfolded to form an angle of 180 degrees, and the right second supporting rod is turned upwards and opened; the first right buffer device adopts a stretching cylinder, one end of the stretching cylinder is hinged to the right side of the installation door frame, and the other end of the stretching cylinder is hinged to the first right support rod; the right pull rod consists of two connecting rods which are hinged together, one end of the right pull rod is hinged to the installation door frame, and the other end of the right pull rod is hinged to the hinged position of the right first supporting rod and the right second supporting rod;

the number of the pedals is 4, and the 4 pedals are called as a first pedal, a second pedal, a third pedal and a fourth pedal from front to back;

the first pedal is fixedly arranged between the front part of the left second supporting rod and the front part of the right second supporting rod of the pedal frame assembly;

the front part of the second pedal is rotatably arranged between the left second supporting rod and the right second supporting rod and is positioned behind the first pedal; the rear part of the second pedal is hinged with a third pedal, and the rear part of the third pedal is rotatably arranged between the left first support rod and the right first support rod and is positioned in front of the fourth pedal; a stretching cylinder is respectively arranged between the left side and the right side of the rear part of the lower side of the second pedal and the left side and the right side of the front part of the lower side of the third pedal, and the stretching cylinders play a role in buffering and stretching when the second pedal and the third pedal are unfolded;

9. The escape device for a subway locomotive according to claim 8, wherein: the escape ramp component also comprises two groups of opening devices, and the two groups of opening devices have the same structure and respectively comprise a compression spring and a supporting platform; the two groups of opening devices are respectively and fixedly connected to the left side and the right side of the lower part of the installation door frame by respective compression springs; the supporting platform is fixedly arranged at the upper end of the compression spring, and the compression spring is vertically arranged along the vertical direction; the rear end of the left first supporting rod is provided with a guide roller, and the rotating axis of the guide roller is parallel to the hinging axis of the left first supporting rod and the mounting door frame; when the first left supporting rod and the second left supporting rod are folded, the guide roller at the rear end of the first left supporting rod is pressed on the supporting platform of the opening device positioned on the left side from the upper part to the lower part, so that the compression spring is in a compressed state;

the rear end of the right first support rod is provided with a guide roller, and the rotating axis of the guide roller is parallel to the hinge axis of the right first support rod and the hinge axis of the installation door frame; when the first right supporting rod and the second right supporting rod are folded, the guide roller at the rear end of the first right supporting rod is pressed on the supporting platform of the opening device on the right side from the upper part downwards, so that the compression spring is in a compression state.

10. An escape device for a subway locomotive as claimed in claim 8 or 9, wherein: the pedal locking device is also included; the pedal locking device comprises a pedal locking pin, a U-shaped limiting clamp torsion spring, an unlocking wrench and a wrench torsion spring; the pedal locking pin is fixedly arranged on the rear part of the inner side of the second supporting rod on the right side of the pedal frame, extends towards the inside of the frame to be below the second pedal, and the axis of the pedal locking pin is parallel to the rotation axis of the pedal when the pedal is unfolded; the U-shaped limiting clamp is rotatably arranged on the second pedal from one end of the U-shaped connecting part of the U-shaped limiting clamp, and the U-shaped limiting clamp torsion spring is used for keeping the opening of the U-shaped limiting clamp in a state of being parallel to the second supporting rod on the right side; a bayonet is arranged on the lower side of the U-shaped connecting part of the U-shaped limiting card; the unlocking wrench is rotatably arranged on the second pedal, and the lower part of the unlocking wrench extends downwards out of the second pedal; the upper portion of unblock spanner is equipped with spacing lug, and spacing lug stretches into in the bayonet socket of the spacing card of U-shaped for prevent the opening of the spacing card of U-shaped to open downwards, and the spanner torsional spring is used for making the spacing lug of unblock spanner keep in the bayonet socket.